12127728 has 40 divisors (see below), whose sum is σ = 31470208. Its totient is φ = 4024512.

The previous prime is 12127721. The next prime is 12127733. The reversal of 12127728 is 82772121.

It is a happy number.

12127728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12127695 and 12127704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14325 + ... + 15147.

Almost surely, 2^12127728 is an apocalyptic number.

It is an amenable number.

12127728 is an abundant number, since it is smaller than the sum of its proper divisors (19342480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12127728 is a wasteful number, since it uses less digits than its factorization.

12127728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141 (or 1135 counting only the distinct ones).

The product of its digits is 3136, while the sum is 30.

The square root of 12127728 is about 3482.4887652367. The cubic root of 12127728 is about 229.7522726573.

Adding to 12127728 its reverse (82772121), we get a palindrome (94899849).

The spelling of 12127728 in words is "twelve million, one hundred twenty-seven thousand, seven hundred twenty-eight".